Telescoping support bar

ABSTRACT

A telescoping support bar installed in a shower enclosure and similar facilities requires no mechanical wall fasteners. The support bar includes telescoping tubes with end retainers gripping walls of the enclosures. Length of the support bar is governed by fixed length spacer means and internal extensible means. Extensible means, having bearings movable along a rod, provides the lengthening and shortening of the support bar as the distance between the bearings is increased or decreased. This change in distance likewise changes the overall length of the support bar. With the retainers snug against the walls, one of the tubes, being rotatable, is turned in circular motion. This rotation is converted into an axial force along the bar causing the retainers to forcefully grip the walls, providing a rigid and strong bar installation.

BACKGROUND OF THE INVENTION

Patent application Ser. No. 11/684,611 sets forth a wall-to-wall gripbar for use in a shower or bath/shower enclosure. The horizontal gripbar is the core of the invention. One of the shortcomings of theinvention in the patent application is the necessity that each bar becustom made according to the dimension of the particular showerenclosure in which it will be installed. This requirement prevents massproduction of the bath and shower assist means.

Also in patent application Ser. No. 11/684,611 sealing means are definedto be attached to the covering means that encapsulate the compressionand tension elements that engage the wall faces of the showerenclosures. A stronger support system is provided if the sealing meansalso serves as bonding means between the tiles of the shower walls andthe contact surfaces of the compression and tension means.

SUMMARY OF THE INVENTION

The present invention overcomes these shortcomings and other limitationsby providing telescoping means that incorporate multiple tubes that areradially compatible and telescope from a minimum length to a maximumlength bar. This variable feature in the length of the bar permits thesame support bar to be used for a range of sizes of shower enclosures,generally eliminating the need to custom-cut a different lengthwall-to-wall bar for each facility.

The various components provide the variability in the bar length.External end retainers grip the parallel walls of the enclosure. One ofthe retainers attaches to an extremity of a rotatable tube in thesupport bar. This tube creates the axial force required for theretainers to grip the walls. At the opposite end of the support bar, thesecond retainer attaches to a smaller diameter tube that telescopes inand out of the larger diameter tube. The longitudinal void within thetubes is filled by a fixed length spacer means, which includes a tubularsection with end bearings; and extensible means, comprising a rodencircled with movable bearings. Adjustment of the bearings,longitudinally on the rod, controls and sets the overall length of thesupport bar. As the distance between the bearings is increased ordecreased the length of the support bar is likewise increased ordecreased. With the retainers fitting snuggly between the walls, therotatable bar is turned in a circular motion coercing the retainers togrip the walls forcefully, providing a rigid and strong installation.Thus the present invention provides for a variable length support barthat meets all of the requirements sought after.

One of the principal objectives of the present invention is to providetelescoping support means that can be easily assembled, installed, andremoved without the use of mechanical fasteners.

Another objective is to provide telescoping support means withlongitudinal adjustability to accommodate a range of shower and otherfacility dimensions thereby eliminating the need to custom-build eachsupport bar.

Another objective is to provide a support bar having easy release meansthereby giving it location mobility within an enclosure.

These and other objects and advantages of the invention will becomeapparent after considering the following detailed specification andaccompanying drawing which cover a preferred embodiment wherein:

BRIEF DESCRIPTION OF THE DRAWING

FIG. 1 is a partial elevation of a shower enclosure having a telescopingsupport bar installed.

FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT

Referring to the drawing more specifically, FIG. 1 referencestelescoping support bar 10 (hereafter called support bar) constructedaccording to the present invention for installation in shower enclosuresor tub/shower facilities having walls 11, 12, and 14 and ceiling 13.Shown also in FIG. 1 are shower head 17 and faucet 18 attaching to saidwall 11.

Referring to FIG. 2, said support bar comprises retaining means 50, saidmeans having retainers 50A and 50B with embedded studs 50C and 50Drespectively. Support bar 10 incorporates rotatable means 20, saidrotatable means comprising larger diameter tube 20A with first bearing20B. Tube 20A of rotatable means 20 telescopes cooperates with aslightly smaller diameter tube 30A, of telescoping means 30; said tube30A translates longitudinally in and out of larger diameter tube 20A ofrotatable means 20. Said tubes 20A and 30A connect to retainers 50A and50B respectively through first bearing means 20B and fourth bearingmeans 30B and 30C respectively in FIG. 2. Tube 20A secures internallythreaded first bearing 20B; threads of said bearing mating with externalthreads of stud 50C embedded in retainer 50A.

Retainers 50A and 50B consist of components constructed of compressible,pliable material; such components being on the order of suction cups,disks, or like means, said disks being covered with or constructed ofdescribed material; each said retainer capable of exhausting air trappedbetween its surface and the surface it engages; and said retainerforcefully gripping said surface through the influence of an axial forceapplied to said support bar. The external faces of retainers 50A and 50Bhave sealing means 50E and 50F respectively attached for the purpose ofassisting in securing said retainers to the wall surface and sealingsaid faces against water intrusion. Said sealing means may be applied inthe form of an adhesive or other means. Tube 30A and fourth bearings 30Band 30C in FIG. 2, cooperate with retainer 50B through a center hole inbearing 30C and the embedded stud 50D. Said fourth bearings 30B and 30Cin tube 30A, and first bearing 20B in tube 20A are secured to theirrespective tubes by means of welds, screws or other anchorage compatiblewith the material employed.

Bearings 30B and 30C, seated in smaller diameter tube 30A of telescopingmeans 30, each encompass a smooth hole about the longitudinal axis. Saidhole in bearing 30B accepts the projection of rod 60A of extensiblemeans 60; said hole in bearing 30C accepts stud 50D of retainer 50B.Said extensible means 60 comprises said rod 60A and third bearings 60Cand 60B; said bearings having securing means 60D and 60E of FIG. 2.

Enclosed within tube 20A of rotatable means 20 is tube 40A of spacermeans 40 securing second bearings 40B and 40C, one said bearing at eachextremity of tube 40A. Bearings 40B and 40C each contain a smooth holealong the common longitudinal axis to accept the projection of stud 50Cand rod 60A, neither bearing 40B nor 40C is rotatably influenced by thereception of stud 50C and rod 60A. Spacer means 40 comprises tube 40Aand bearings 40B and 40C. With bearings 40B and 40C secured to tube 40A,spacer means 40 has a fixed length within each support bar; said spacermeans occupies the spatial cavity between bearing 20B of rotatable means20 and bearing 60C of extensible means 60.

In applications where support bar 10 incorporates relatively smallerdiameter tubular sections, tubes 20A, 30A, and 70A will dictate acorresponding size reduction in related elements. Spacer tube 40A ofspacer means 40 may have its inner diameter decreased to accept theprojections of stud 50C and rod 60A without the need for bearings 40Band 40C. Therefore, the extremities of said spacer tube 40A will engagebearing 20B of rotatable means 20 and bearing 60C of extensible means 60to transmit the axial force along support bar 10.

As previously stated, extensible means 60 comprises rod 60A coupled tothird bearings 60B and 60C; with bearing 60C abutting bearing 40C ofspacer means 40 and bearing 60B positioned against bearing 30B of tube30A. Bearings 60B and 60C have securing means 60D and 60E internallyenclosed and extending radially to secure said rod 60A therebypreventing movement of said bearings and said rod relative to theircommon axis.

As shown in FIGS. 1 and 2, tube 70A of covering means 70 is the samediameter as tube 20A of rotatable means 20 and extends longitudinallyfrom its intersection with tube 20A to said retainer 50B; Tube 70Acircumvents tube 30A of telescoping means 30. The extremities of tubes20A and 70A enclose the longitudinal projections of said retainers 50Aand 50B respectively; said tube extremities themselves being containedwithin the circumferences of sleeves 70B and 70C respectively ofcovering means 70.

When all components are assembled in their prescribed relationships witheach other, support bar 10 is transformed into a telescoping support barthat can accommodate the varying plan dimensions of shower enclosuresand similar facilities.

During installation of support bar 10 the distance is measured betweenwalls 11 and 12 of FIG. 1. The installer removes retainer 50B, andtelescoping means 30, consisting of tube 30A and fourth bearings 30B and30C from the bar assembly shown in FIG. 2. Extensible means 60,comprising rod 60A and bearings 60B and 60C, having securing means 60Dand 60E, is removed to set the required distance between bearings 60Band 60C. Securing means 60D and 60E are loosened and bearing means 60Band 60C moved longitudinally along rod 60A the distance required tobring the length of support bar 10 into compliance with the measureddistance between walls 11 and 12 of FIG. 2; taking into account thecompressibility of retainers 50A and 50B. Covering means 70 comprisingtube 70A and sleeves 70B and 70C are included in the installationprocess as the components previously removed are reassembled in reverseorder. When support bar 10 is installed in the shower or other facility,sealing means 50E and 50F, attaching to retainers 50A and 50Brespectively, engage walls 11 and 12.

Following the engagement of support bar 10 with walls 11 and 12; tube20A of rotatable means 20 is rotated about its longitudinal axisprompting mating threads of stud 50C and bearing 20B in FIG. 2 tofacilitate longitudinal separation between first bearing 20B andretainer 50A, strongly forcing retainers 50A and 50B and sealing means50E and 50F to grip walls 11 and 12. As rotatable means 20 comprisingtube 20A and first bearing 20B is rotated, the other components ofsupport bar 10 remain stationary. The rotational energy applied torotatable tube 20A is converted into a compressive axial force bythreaded means of stud 50C and bearing 20B working together. The forceis transmitted along longitudinal axis of support bar 10 as firstbearing 20B presses against the end of tube 40A and second bearing 40B,said bearing securely engaging spacer tube 40A, said force traversingtube 40A to its opposite extremity to bearing 40C; said force beinggiven to bearing 60C. Through the described connectivity of bearing 60Cand rod 60A said force enters rod 60A and travels to bearing 60B throughsimilar connective means previously described for bearing 60C. Withthird bearing 60B positioned against fourth bearing 30B, said force isreceived by telescoping means 30 having fourth bearings 30B and 30Cfixedly attaching to tube 30A of said telescoping means.

Tube 30A receives the force from bearing 60B through end of said tubeand through fourth bearing 30B; said force passes to bearing 30C andretainer 50B through the mating surfaces of retainer 50B and bearing30C. As shown by FIG. 1, wall 12 engages retainer 50B, having sealingmeans 50F; consequently, wall 12 receives said force from longitudinalaxis of support bar 10 by means of retainer 50B and wall 11 by means orretainer 50A. As rotation of tube 20A continues, said force increases toattain its required magnitude creating a rigid, dominant, support barbetween walls 11 and 12. With the decision to remove support bar 10,tube 20A is rotated in reverse until support bar 10 is adequatelyreleased from the holding force and becomes removable.

It is preferred that the materials of construction for the preferredembodiment be rust and corrosion resistant such as galvanized steel,stainless steel, plastic and rubber; each capable of providing therequired characteristics for a specific use.

Thus there has been shown and described a telescoping support bar thatfulfills all the objects and advantages sought after. Many changesmodifications, variations and other uses and applications of theinvention will, however, become apparent to those skilled in the artafter considering this specification and accompanying drawing. All suchchanges, modifications, variations and other uses and applications whichdo not depart from the spirit and scope of the invention are deemed tobe covered by the invention which is limited only by the claims whichfollow.

1. telescoping wall-to-wall support bar for installation in enclosures such as shower, bath/shower and similar facilities; said support bar comprising retaining means with sealing means, rotatable means, spacer means, extensible means, telescoping means, and covering means in combination forming a longitudinal rigid assembly: a) said retaining means comprising components incorporating compressible, pliable material; such components being on the order of suction cups or like means having sealing means engaging wall surfaces of aforesaid enclosure; said retaining means having threaded stud mating with threaded first bearing means of rotatable means; said retaining means engaging external extremities of multiple tubes of said support bar to forcefully engage walls of said enclosures; b) said rotatable means comprising first diameter tubular section circumferentially securing threaded first bearing means; said threaded bearing means mating with said threaded stud of retaining means; said tubular section geometrically compatible with said second diameter tube; said first diameter tubular section having longitudinal axis directionally oriented to receive said second diameter tube, cooperating with said second diameter tube to function as telescoping unit; said rotatable means coupling with said retaining means through threads of said first bearing means mating with threads of said stud of retaining means; said first bearing means cooperating with said stud converting rotational motion of first diameter tubular section into translational movement of retaining means generating compressive axial force; said force traversing longitudinal axis of said support bar forcing aforesaid components of retaining means to forcefully engage enclosure walls; c) said spacer means, positioned in spatial void between said first bearing means of said rotatable means and third bearing means of extensible means; said spacer means comprising tubular section circumventing multiple second bearing means; said tubular section fixedly securing second bearing means; said second bearing means providing passage for longitudinal projection of stud of said retaining means and rod of said extensible means; extremities of said tubular section, in combination with said second bearing means, engaging surfaces of said first bearing means of rotatable means and third bearing meanings of extensible means; d) said extensible means comprising longitudinal rod with multiple third bearing means encircling longitudinal axis of said rod; said third bearings having mobility along longitudinal axis of said rod, providing adjustability to overall length of said telescoping support bar; said fourth bearing means being secured in final position by fastening means radially operable within said bearings, capturing rod and locking positions on said longitudinal rod; e) said telescoping means comprising said second diameter tube and multiple fourth bearing means; said second diameter tube radially compatible with said first diameter tubular section and directionally oriented along common longitudinal axis receiving said first diameter tube of said rotatable means and meshing into a telescoping bar; said second diameter tube enclosing and fixedly securing said multiple fourth bearing means; radius of said second diameter tube being smaller than radius of said first diameter tube permitting said second diameter tubular section to experience axial translation in an out of interior of said first diameter tube along their common longitudinal axis; f) said covering means comprising tubular segment radially compatible with said first diameter tube, and directionally oriented with longitudinal axis of said telescoping means; said tubular segment encircling longitudinal section of said second diameter tube; multiple sleeves circumventing extremity of said first diameter tube and intersection of said tubular segment with said retaining means.
 2. telescoping wall-to-wall support bar for installation in enclosures such as shower, bath/shower and similar facilities; said support bar comprising retaining means with sealing means, rotatable means, spacer means, extensible means, telescoping means, and covering means in combination forming a longitudinal rigid assembly: a) said retaining means comprising components incorporating compressible, pliable material; such components being on the order of disks or like means having sealing means engaging wall surfaces of aforesaid enclosure; said retaining means having threaded stud mating with threaded first bearing means of rotatable means; said retaining means engaging external extremities of multiple tubes of said support bar to forcefully engage walls of said enclosures; b) said rotatable means comprising first diameter tubular section circumferentially securing threaded first bearing means; said threaded bearing means mating with said externally threaded stud of retaining means; said tubular section geometrically compatible with said second diameter tube; said first diameter tubular section having longitudinal axis directionally oriented to receive said second diameter tube, performing with said second diameter tube to function as telescoping unit; said rotatable means coupling with said retaining means—internal threads of first bearing means mating with external threads of said stud of retaining means; said first bearing means cooperating with said stud converting rotational motion of first diameter tubular section into translational movement of retaining means thereby contributing to generation of compressive axial force; said force being transmitted along longitudinal axis of said support bar forcing aforesaid components of retaining means to strongly adhere to said enclosure walls; c) said spacer means, positioned in void between said first bearing means of said rotatable means and third bearing means of extensible means, comprising tubular section having interior circumference of said section engaging circumference of longitudinal projection of stud of said retaining means and projection of rod of said extensible means; extremities of said tubular section engaging surfaces of said first bearing means of rotatable means and third bearing meanings of extensible means; d) said extensible means comprising longitudinal rod with multiple third bearing means encircling longitudinal axis of said rod; said third bearings having mobility along longitudinal axis of said rod, providing adjustability to overall length of said telescoping support bar; said fourth bearing means secured in final position by fastening means radially operable within said bearings, capturing rod and locking positions on said longitudinal rod; e) said telescoping means comprising said second diameter tube and multiple fourth bearing means; said second diameter tube radially compatible with said first diameter tubular section and directionally oriented along common longitudinal axis, receiving said first diameter tube of said rotatable means and pairing into said telescoping bar; said second diameter tube enclosing and fixedly securing said multiple fourth bearing means; radius of said second diameter tube being smaller than radius of said first diameter tube, permitting said second diameter tubular section to experience axial translation in and out of interior of said first diameter tube along their common longitudinal axis; f) said covering means comprising tubular segment radially compatible with said first diameter tube, and directionally oriented with longitudinal axis of said telescoping means; said tubular segment encircling longitudinal section of said second diameter tube; multiple sleeves circumventing extremity of said first diameter tube and intersection of said tubular segment with said retaining means. 